Here is a config for patrol ops 3 with the Middle Eastern Irregulars from @CAF_aggressors and the static weapons by RDS.
It's a very rough job at the moment. You will probably need to edit lots more files to get rid of all traces of the Arma 3 units. I have tested this a little and it works most of the time. I'm not sure if it's down to where I have placed certain markers but sometimes a mission may auto complete. Since there are no (and it would not make sense if there was) insurgent tanks I have replaced them with the offroad armed vehicles from the middle eastern irregulars.
Like I said this is still very WIP so you will still need to do lots of editing to the other mission files. I'm working on getting a mission working for my clan on @Clafghan and/or @fallujah using marines which I may release here once it's working properly.
Thanks to Roy86 for letting me post this here :)